Sectional rod coupling



March 14, 1933. M. KALBEN SECTIONA L ROD COUPLING Filed Dec. 16, 1930 IINVENTOR MAX MzM/Y w amM/a/ ATTORNEY Patented Mar. 14, 1933 PATENT OFFICE m menu, cram nmoo, oamronm snc'rmnan non construe Application filed December is, 1920. Serial Hp. 508,843.

My invention relates to couplings, more particularly to sectional rod couplings, and the objects of my invention are:

First, to provide a coupling of this class which is particularly adapted to join cleanout rods used in connection with the repairin of plumbing;

econd, to provide a coupling of this class which is capable of withstanding strains of any nature, such as tensional strains, compression strains, and tortional strains, with out loosening;

Third, to provide a coupling of thisclass which, if need be, is capable of holding adjacent lengths of rod in accurate axial alinement;

Fourth, to provide a coupling of this class which, though capable of holding rods secure against acc1denta1 separation, may, when desired, be quickly separated;

Fifth, to provide a coupling of this class which may be connected or disconnected without the use of tools as the action of the rods with which the coupling is used cannot be applied in such a manner as to cause the coupling to work loose; and

Sixth, to provide on the whole a .novelly constructed rod coupling which is durable, eflicient in its action, and which will not readily deteriorate or get out of order.

With these and other objects in view as will appear hereinafter, my invention consists' of certain novel features of construction,

5 combination and arrangement of parts and portions as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawing and to the characters of reference thereon, which forms. part of this application, in which:

Figure 1 is an elevational view of a rod used in conjunction with my coupling, and one of the locking nuts positioned thereon and in section;

Fig. 2 is a side elevational viewof the connecting member;

Fig. 3 is an end elevational view thereof;

Fig. 4 is a sectional view thereof, through HofFig.2; i

'Each nipple 2b is intersected by Fig. 5 is an elevational view of one of the washers; 4

Fig. 6 is an edge elevational view thereof; Fig. 7 is an assembled view of the coupling, with the rodsshown fragmentarily and with parts and portions in section to facilitate the illustration, the section being taken along substantially 77 of Fig. 8; and

Fig. 8 is an elevational view of the com pleted coupling, taken at right angles to Fi 7, and showing the rods fragmentarily. imilar characters of reference refer to similar parts and portions throughout the several views of the drawing.

Bods 1, connecting member 2, look nuts 3, and washers 4 constitute the principal parts allrd portions'of my novel sectional rod coup 1n Z T e rod, designated} 1, with which my coupling is adapted to beused, is of the proper size and strength, and may be either round or of polygonal cross section. At each end of the rod 1, there is formed a short, right angularly extending pr iection 1a, formed 'by bending the rod, as shown best in Fig. 1. 75 The connecting member 2 of my coupling is provided with an enlarged central portion 2a, which is polygonal, preferably six-sided. Extending from eitherend of the central portion 2a, are externally threaded nipples 2b. 30

a slot 20, which is adapted to sun ly receive a shank portion, designated 16,0 the rod 1, adjacent one of the'projections 1a. .The axis of the rod, when so received by the notch 20, is in as axial alinement with the connecting member 2, as shown best in Fig. 7 The channel 20 extends into the central portion 2a of the connecting member so as to intersect one of the fiat sides thereof. The channel 20 thus forms a notch 2d at its inner end, which extends from the periphery of the nipple 2bto the peri hery of the enlarged central portion 2a, as s own best in Figs. 2, 3, and 4. The

notches 2d receive the extended portions of the projections 1a. It will be'noted that the rangenient substantially, as set forth in theare rigidly locked ment.

forms a sleeve ea for a portion of its length,

which snugly receives the rod 1. The remami portion of the bore is enlarged and screw-t readed, formin an internally "threaded portion 36, which is adapted to screw upon one of the nipples 261 2 Each lock nut is largest at'i internally threaded end. This portion is olygonal, as

lndicated by 30. From the-p0 ygonal-portion 30, the lock nut diminishes in cross sec tion, forming a conical portion 3d, which 'prevents the coupling from catching when in- 'sfit in said grooves and t eir turned ends exserted in a pipe or thelike.

A pair of washers 4 is provided; the washers are in the form of rings, with a pair, of diametrically disposed, radiallyextending channels 4a, which complement the notches 20, as. shown best Fig. 2.

My couplin member is assembled as 2501- lows: The en s of a pair of rods 1 are inserted in -the ,channels 2c and notches 2d of the connecting 'member 2, first having sligped the washers 4' over the rod. These was era are fitted against the ends of the enlarged portion at, so that one channel 4a of each washer receives the portion of the projection 1a which protrudes from'the corresponding.

notch 20? The lock nuts 3 are then screwed onto the nipples 26 until they bear a inst the washers 4. When thus .cou led, t e rods 1 against a relative move- Though I have shown and described a particular constructiomcombination and arrangement of parts and portions, I do not' wish to be limited to this particular construction, combination and arrangement, but desire to include in the scope of my invenap nded claims.

aving thus described my invention, what; I claim as new and desire to secure by Letters Patent is:

nector member provided with a wrench en-- gaging middle portion and reduced threaded portions at its opposite ends and provided with a groove in one side-only at one end and a similar vgroove in itsopposite side only at its other end, said grooves being separated from each other so that the innerends of said grooves are ofi set in relation to each 'ends extending outwardly in opposite directions at the middle portion of said connector member.

3., In a sectional sewer rod coupling, a connector member provided with a wrench engaging niddle portion and reduced threaded. portions at its opposite ends and provided tendin outwardly in opposite directions at the mi dle portion of said connector member and threaded locking means adapted to screw on saidthreaded ends mounted on said rods and adapted to rest a ainst the turned porl.

arged portion in opposite directions, rods v with turned ends a apted to fit in said grooves so that the turned ends extend in o posite directions and lockin means slidab y mounted upon said rods an arranged teen age the turned ends of said rods and theenarged portion of said connector member for rigidly connecting the ends of said rods and connector member together. 7

5. In a sectional screw rod coupling, a confoo nector member threaded at its opposite ends and enlarged at its middle portion provided with a groove in one 'sideonly of'onethreaded end and a similar groove in the opposite side only of the other threaded end, said grooves extending outwardly into .the enarged portion in opposite directions, rods with turned ends adapted to fit in said grooves so that the turned ends extend in oppositedirections and locking means slidab mountediipon said rods and arranged to engage the turned ends of said rods and the enlarged portion of said connector member for rigidly connecting the ends of said rods and connector member together, said locking means including washers provided with complementary channels arranged to fit between said connector member and said locking iao means and receive the turned ends of said rods.

In testimony whereof, I have hereunto set my hand at San Diego, California, this 4th day of December, 1930.

' 7 MAX KALBEN.

other and rods with right angle turns adapted to fit in said grooves and their turned 

